Friday, 6 March 2015

Algebraic Expansion involving binomials (and trinomials)

Recap: What is distributive law (of multiplication of addition/subtraction)?

Use distributive law to expand and simplify 5x(2x-3y). 

Challenge: Expand and simplify (x+2)(x+3).

 Visit goo.gl/bsr3 Visualise the expansion of (x+2)(x+3).

 Example: For (x+3)(x+3), we have

 

Hence (x+3)^2 = x^2 + 6x + 9.

3 comments:

  1. link https://drive.google.com/a/s2015.sst.edu.sg/file/d/0B-F7V5CXHJHlNHNkQzhZdGxVWGs/view?usp=sharing

    ReplyDelete
  2. This is the link.

    https://drive.google.com/a/s2015.sst.edu.sg/file/d/0B_5u2VDQoONXcGw0RE9fc01tT3c/view?usp=sharing

    ReplyDelete